Means for chocking and starting life-boats, &amp;c.



J. S. STOCKMAN.

MEANS FOR CHOCKING AND STARTING LIFE BOATS, &c. APPLICATION FILED MAYI6, 1918,

1,275,101. Patented Aug. 6, 191a 1. s. STOCKIVIAN. MEANS FOR CHOCKING AND STARTING LIFE BOATS, 81c;

APPLICATION FILED MAY 6. I9I8,

1,275,101. PatentedAug. 6,1918.

' 2 SHEETS-SHEET 2- mi tresses;

JA'MEs SMITH 's'rooKMniv, E" :snoox nyixraiv nw YORK;

f 1uEANsFoBcHocKi1e AND STARTING LIFE-BOATS, an;

To alive 07mm it majooncerhi' Be it known that I, JAMEs SMITH LSTOCK I MAN, a subject of the King of Great-Britain,

having declared my intention "of becoming a citizenof the United States, and. a resident of 1 the borough of' Brooklyn; county of Kings, city and. State of New, York, have invented. certainnewwand useful. Improve-I ment fin:v Means for 'Chocking and Starting Life-Boats, &c., of:which the following is a specification; a I p ,While applicable to other objects and purposes, improvements are designed more particularly for use'as a means for. mounting life and other auxiliary boats on the decks of shipstor other. supports-in vsuch manner-that in emergency. such boats may i. belquickly andcon'veniently raised and manipu'lated' for the purpose of casting ofhas hereinafter more fully set forth." -The invention consists in the specific construction, combinatiom and arrangement of vparts described and claimed,-a distinctive feature being the supporting of the keel ofathe boat fore' and aft/ on bearing rollers mounted-on rocker arms which ma be raised by lever: age applied.:adjacent "to their. fulcrums, whereby thsez inertness; of rest; is"; readily overcomeandan initial speed of motion ime parted thafiaids materially in iraising the boat and its keel :clearofthe cho'cks and starting E the boat, upward,thereby, relieving the tackle and fall .of the initial 7 strain heretofore :and otherwise involvedand (obviating theneedrofla number of extra hands to eifect the starting'lorrli-fting of the boat as a preliminary tohoisting' anducastingoff inthe usual manner.

' nal section through Fig, 2;

Specification of Letters Patent; Palijnte'd Afig, 6, Application filedvMay 6, 1918. Serial No. 232,821. I I

is section taken upon plane of line 7,.7,Fig.,-5. i

Fig.1.;1, illustra es diagrammatically the use ,of my starter-chocks S, S, in maintainmg a boat B, on a deck, or other support, e T, T, representing; the usual davits and tackle and fall provided for the hoisting andlowering of the boat when required.

The operative parts of my starter-chock S, are assembled upon and mainly between:

lines in- Figs. 3iand' 5.

As shown in the. drawings; the startingrollerr, ismounted upon a'naxlej a, extending: between and rigidly attached to the. rocker-arms a, a although this is not essential, as the i roller. maygb e rotatably mounted in any other-way, as may be found most expedient; v11nfact, fornthat fmatter, theurollerrvr, may be omitted, and a convexly curved bearing (surface substituted in lieu, thereof for, contact with the keel .1), (represented, bythje lines-b invall but Fig. 1) of the boat B, although the roller is obviously preferableasja means of reducing frictional contact .With the .keel and insuring greasy riding thereunder. The rocker arms a, at, arepivotally-sjupported on. an axle ortrunnionsa mounted on and between the upright is, s, to which axle they may be rigidly attached,:as well as being rigidly secured to the segmental gear a positioned mental gear a upon occasion to raise the rocker arms a, a and roller 1.

The powershaftp, may be extendedlbe yond the starter-chock S, suificiently-to-cnable the actuating lever L, to clear the beamv of the boat B, so as to facilitate manipulation.

The roller 1", is formed on its inner sidev with a flange 11', for guiding and. retaining contact with the keel b, of the boat B, but its other side is unflanged, andpreferably flush with the adjacent edge of the rocker arm M, as shown particularly in Fig; 7, so as to facilitate the release of the keelof .the :boat:

are of like construction,being reversed. only as related to eachv other, and having th-eirlevers L, L, extending in opposlte-directions as ShO\V11-i1l F ig-'1, in which M, represents the medial chock usually provided for the, purpose of sustaining: the boat laterally: .1

By meansof my starter-chocks-a boat may be quickly and easily loosened up and its keel cleared so as to facilitate and eX- pedite hoisting by means of the usual iall and tackle,-nthe relatively great power that may be applied for the purpose through the medium of'the levers L, L, overcoming the dead weight orinertia of theboat at rest, and obviating the necessity for the employment of extra handsand help for: the purpose, since a man to each lever and .a man to eachfallto' take in. slack is su'fficicnt-to accomplish the preliminary: raising and starting of the boat in a satisfactory manner; Furthermore the hoist "is clean and clear because the properalinement of the boat is not disturbed norimpaired by extra hands heretofore indispensable tostart the lift of the dead weight of the'boat. 1

My invention is of especial importance under present war conditions, as in case of emergency it will savemuchvaluable time and labor, andprevent crowding and confusion when life boats and similar craft are desired :for immediate use.-- d

It will be noted: that my; device embodies practically and essentially a combination of chock and starting mechanism, and hence I designate it hereinas a starter-chockcas it performs both functions, as hereinbefore set 'ortha I have herein shownQand described my keel-bearingrolleras mounted-0n andbetween two rocker arms, although it is obvious that it might be mounted on one: rocker; arm with like result if said rocker arm were made of sufficient-strength for the purpose. It is also obvious that thechock seat=-s%; might be omitted without departino' 'trom the spirit and intent of my inventiont-since theirocker are a, might rest directly upon the base 8',

' chock seat, a keel bearing roller adapted to rest directly upon said chock" seat *and 'mountedion arocker arm, said rocker arm,

and mechanism for positively raising said rocker arm and keel cbearingiroller;iforstho purpose describedpi 2. A starter=chock of the :character design nated,v comprisingabase formedsw-iths-a chock seat, a keelbeaningtroller,adapted -to rest directly; upon. .sai-d; chock seat wand; mounted: -;on a" rocker arm, said v rockemarm, a gear pivotal-1y :and rigidly attached thereto, a power pinionimeshing with; said v:iggear, and mechanical meansfor actuating said 1 power pinion, for the purpose describedsw.

'3. A starter-chock of the character: designated, comprising a baseaformed switha chocksseat, a keel bearing adaptedzito rest' directly upon said chockseat and mounted. on rocker/arms, saidrockerarmawand mechanism for: positively raising said ,rocker farmsand keel bearing, :for the purpose described. 4.v A starter-chocleof the characteridesig, nated, .comprisinguaa base fOIIIlBdMWitll: a chock seat, a keel bearing: {roller adapted to rest c. directly 1 upon; said chockly s'eat,-v and-E mounted on and betweentrockenarms, said 0) rocker. arms," and mechanism: fonpositively raising said rocker ,armssa'ndikeel bearing, tor.the, purpose described-11%;: V a

' 5. A-starterichock of i he. haracterdeSig-cnated,; comprising, a ,basenformed "with; a chock seat, a keel ibearing roller adapted;- to rest .directlyruponwsaid chockrfseatrs and .3:: mounted :on and )bBtNSZQQIl rocker arms, said rocker arms, a .gearrigidly attached thereto a powerpinion meshing with saidzgear; and no mechanical means for 1 actuating; sa-id; POWQI. pinion, fol-the purpose described;

6. A starter wchock-eithe charactenidesigg nated,. comprising a-:bas.e formedi;. with a, chock-seat, a keel bearing.zadaptedato;-rest directly uponsaid chock scat,aa-pi ed,SQP' port \fOT-f said: bearing, and means fOI'r POSi" tively raisingsaidbcaring and; support 7. A starter-chockwof ,the icharacter des ignated, comprisingsa-baseiwithmhock seat,

a keel roller androcker arms esaidqroller adapted, to rest' directlyw. upon said chock- 1 seat and mechanism eforr positively;,raising said roller and rocker arms,- iior the purpose described.

8. A starter-chock oftheicharacterdesignated, comprising arbase; formed with a chock ;rest,: "a keel: bearing: roller adapted to rest directly upon said chock seat and mount-, ed on and between rocker arms, said rocker arms, a segmental gear between said rocker mounted in the sides of said base, a power arms and rigidly attached thereto, a power shaft, a lever on said shaft, and a gear on 10 pinion meshing with said segmental gear, and the shaft of said rocker arms and control a lever arranged to actuate said power ling the latter.

5 pinion, for the purpose described. JAMES SMITH STOGKMAN.

9. A starter-chock of the character desig- Witnesses: nated, comprising a base formed with a DOROTHY Mm'r'r, chock rest and a medial shock, rocker arms GEO. WM. MIATT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

, Washington, 110." a o 

